Before a friend said to me the brushless motor controller and what are the differences between carbon brush motor controller, in fact, brushless dc motor controller is composed of main body of the motor and drive, is a typical mechatronics product. Because of brushless dc motor based on self-control type operation, so not as frequency control of motor speed under overloading starting of synchronous motor controller as plus startup winding on the rotor, also won't generate oscillation and step out when load mutation. Therefore, it is generally used to control the demand is higher, higher speed of devices, such as model aircraft, precision instruments and meters for speed control of motor controller strictly, spins at very high equipment. And usually power equipment are used by the motor controller, such as hair dryer, electric motor factory, household smoke lampblack machine, etc. Series motor controller speed also can achieve very high, but due to the wear of carbon brush, so its service life is often not as good as brushless motor controller. (The service life of the brushless motor controller usually in tens of thousands of hours in the order of magnitude, but due to the different bearing brushless motor controller also has a very different life. Service life of carbon brush motor controller: usually have motor controller of the continuous working life in more than a few hundred to 1000 hours, to use the limit will need to replace carbon brush, otherwise easy to cause bearing wear. )
